我很想知道,我是否可以复制一定数量的物体,但并非全部从阵列到另一阵列。 例如:大阿雷拉有10个物体,只想将其4个物体复制到小阿雷。 请帮助我。 非常感谢
NSMutableArray *smallArray = [bigArray mutableCopy];
Use the following method...
- (NSArray *)subarrayWithRange:(NSRange)range
As docs
Returns a new array containing the receiving array’s elements that fall within the limits specified by a given range.
你可以这样做。
NSMutableArray *smalllArray=[[NSMutableArray alloc] initWithArray:[bigArray subarrayWithRange:NSMakeRange(0, 5)]];
视你想要把哪些物体列入贵国的次官,你或能够把新阵列作为包含一系列不同阵列的子集,或能够根据某种标准确定次阵列,进行搜索。
毗连范围的使用:
- (NSArray *)subarrayWithRange:(NSRange)range
更复杂的选择使用:
- (NSArray *)filteredArrayUsingPredicate:(NSPredicate *)predicate
I have created a new iPhone application.I have two mach machines. I have created the certificate for running application in iPhone in one mac. Can I use the other mac for running the application in ...
HI, In our application i am using corelocationframework when opening application a alert for allow and dont allow.when clicking on the allow for current location we will show current location.When ...
Created a View based Project and added a contact to the AddressBook using ABAddressBookRef,ABRecordRef now i wanted to display the added contact ABPersonViewController is the method but how to use in ...
我不禁要问,那里是否有任何实例表明从Peit向服务器发送音响。 I m不关心电话或SIP风格的解决办法,只是一个简单的袖珍流程......
我希望我与四舍五入的累进角进行网上讨论。
我正试图把图像放在搜索条左边。 但是,问题始于这里,搜索条线不能重新布署。
We have a restaurant table that has lat-long data for each row. We need to write a query that performs a search to find all restaurants within the provided radius e.g. 1 mile, 5 miles etc. We have ...
I like to write bash shell scripts on my iPhone, put them in an app folder with an icon, plist, etc., so they execute like apps by tapping their icon on SpringBoard. This is not interactive like ...